Zen Cart Product Type - repost 2

1. I need a custom Product Type for Zen Cart 1.5.1; basically a duplicate of "Product - General" with several fields added. They are in the attached PDF as selectable text in the red square. If value is left empty, entire field should not appear on page. Can values support HTML, i.e.: links? 2. A step by step quick instruction for the Product type Additionally, I would like the steps needed to create / alter this Product Type outlined step by step so that I can perform this operation myself. Please let me know the added cost for doing this. I am a PHP novice, knowledgeable in HTML, CSS, and some javascript editing. 3. Custom Calculator Additionally, this new Product Type would also need a square footage to Cartons Calculator that allows the total to be sent to the shopping cart, like this example: [login to view URL] • As for the "Square Foot Calculator" link, it should popup in a new window (like example page), but to a blank page. • "How to Measure" link, will go to a blank store page. I'll add content later.